Snippet

Documentation

A post to Google+ that includes a link renders a preview, or
snippet, that contains the page title, a brief description of
the page, and a thumbnail image. These pieces of data are extracted from the
shared URL's content in one of four ways, listed in order of precedence:

If the page's <head> element contains <title> and
<meta name="description" ...
/> tags, the +Snippet uses the title and the content attribute of the
description meta tag for the snippet description. For the thumbnail
image, the sharebox attempts to find a suitable image on the page.

<title>...</title>
<meta name="description" content="..." />

4. Best guess from page content (not recommended)

If none of the previous data is present, Google parses the page and
attempts to find the best title, description, and image.

Note: The logic that fetches the +Snippet data respects
cache-control directives, so changes to your page might not immediately be
reflected in the +Snippet.

Frequently Asked Questions

When you run this tool on your web page it will provide a detailed
report on all of the structured data markup on that page, including the
markup used by +Snippet.

I have multiple schema.org itemscopes on my
page. Which one will the +Snippet use?

If multiple schema.org itemscopes are defined on your page, the
+Snippet is created from the itemscope that is nearest the top of
your page's source code. For example, if you have itemscopes defined on
both the body element and a div element
defined below the start body tag in your page, the +Snippet
is created from the itemscope associated with the body
element.

Why isn't my +Snippet image appearing?

Images that are too small or not square enough are not included in the
+Snippet, even if the images are explicitly referenced by schema.org
microdata or Open Graph markup. Specifically, the height
must be at least 120px, and if the width is less than 100px,
then the aspect ratio must be no greater than 3.0.

How do I get my web page content to render with a full-bleed image and a description when users share it on Google+ using a URL?